1 Commits
Author SHA1 Message Date
samiandClaude Sonnet 5 c6f864ea30 gui: fix RpcClient double-free on stop() and the 1000-row list cap
Both found live while building gui/tests/dod's DoD harness, not from reading
the code — see that commit for how.

RpcClient::stop() left conn_ dangling after joining the worker thread: the
thread's own finish() flushes the DeferredDelete stop()'s
connect(&thread_, &QThread::finished, conn_, &QObject::deleteLater) already
posted, so conn_ is gone by the time stop() returns, but nothing cleared the
pointer. Any caller that calls stop() and later lets the client destruct
(the harness's own client.stop() at shutdown; also plain, correct API usage)
hit a double-free in the destructor's leftover `delete conn_`. Caught by
ASan on the very first run that actually exercised the stop-then-destroy
path.

requestInitialList() also called download.list with a hardcoded
`{"limit": 1000}`, silently capping the table at 1000 rows no matter how
many the daemon actually has — download.list.schema.json's own description
says "the GUI pages", not "the GUI takes it all in one call". The
scroll-60fps DoD gate refused to run against mockd --tasks 10000 rather
than "pass" against a 1000-row table, which is what surfaced it.
requestInitialList() now pages (5000 per call, the schema's own max) until
`total` is satisfied, then resets the model once with everything.

Separately: RpcConnection's session.subscribe list never included
event.settings.changed or event.grabber.progress, even though RpcClient has
carried signals for both since the Options/Grabber work — session.subscribe
"replaces the previous selection" and "nothing is delivered until this is
called", so both events were being silently dropped by any real daemon that
enforces the subscription (mockd does; verified live with a second
subscribed client actually receiving event.settings.changed after this
fix, round-tripped through a real veloxd's settings.set). GrabberWizard's
5 s poll fallback is exactly why this went unnoticed until now — it covered
for the missing push the whole time.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01NSCdCWFXBTSBBK3MzWtJiC
2026-09-12 21:27:28 +04:00
5 changed files with 49 additions and 427 deletions
+2 -28
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@@ -19,12 +19,7 @@ import {
} from './context-menus.js';
import { MediaBridge, notifyTab } from './media-bridge.js';
import { createTransport, transportStorage, type TransportStatus, type VeloxTransport } from './transport/index.js';
import {
SESSION_SUBSCRIBE_PARAMS_EVENTS_ITEM_VALUES,
type CaptureOfferParams,
type CaptureRules,
type DownloadSpec,
} from '../shared/protocol/index.js';
import type { CaptureOfferParams, CaptureRules, DownloadSpec } from '../shared/protocol/index.js';
let transport: VeloxTransport | undefined;
let rules: CaptureRules = DEFAULT_CAPTURE_RULES;
@@ -80,31 +75,10 @@ async function refreshRules(): Promise<void> {
}
}
/**
* "Nothing is delivered until this is called" (session.subscribe's own description) —
* without it, event.task.progress et al. never reach this connection at all, no matter
* how many listeners bridge.ts registers locally. Requests the whole set every time
* because any popup/options document could open at any moment and none of them narrow
* per-tab; a fresh connection (first connect, or after a drop) starts with nothing
* subscribed until this runs again.
*/
async function subscribeToEvents(): Promise<void> {
try {
await mustTransport().call('session.subscribe', {
events: [...SESSION_SUBSCRIBE_PARAMS_EVENTS_ITEM_VALUES],
});
} catch {
// Best-effort; a reconnect (or the next event.settings.changed-driven refresh) retries.
}
}
function onTransportState(status: TransportStatus): void {
const detail = status.fatal ?? (status.needsPairing ? 'needs pairing' : '');
console.debug(`[velox] transport ${status.state}${detail ? `${detail}` : ''}`);
if (status.state === 'connected') {
void refreshRules();
void subscribeToEvents();
}
if (status.state === 'connected') void refreshRules();
}
async function setOverride(override: 'auto' | 'ws' | 'uds'): Promise<void> {
-389
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@@ -1,389 +0,0 @@
// Runs the transport, the capture hook, and the popup event path against a REAL veloxd
// — not FakeDaemon. Everything else in this suite is faithful to the documented wire
// protocol, but "faithful" isn't "real"; this is what actually proves it.
//
// Requires VELOXD_BIN (path to a built veloxd) in the environment. Skips itself with a
// clear message otherwise, so `npm test` and CI (no daemon binary lying around) are
// unaffected. Run it like:
//
// VELOXD_BIN=/path/to/build/dev/bin/veloxd npx vitest run tests/live
//
// Each veloxd instance gets its own scratch XDG_RUNTIME_DIR/XDG_DATA_HOME/
// XDG_CONFIG_HOME/HOME (main.cpp's single-instance lock is keyed to the runtime dir, so
// this can run alongside another developer's or CI's own veloxd on the same machine).
// VELOX_PAIR_AUTO=1 stands in for the GUI's Allow-prompt approver during dev/test
// (rpc/pairing.hpp's EnvAutoApprover) — pairing itself is exercised for real, only the
// human click is stubbed.
import { spawn, type ChildProcessWithoutNullStreams } from 'node:child_process';
import { mkdtempSync, mkdirSync, rmSync } from 'node:fs';
import { readFile } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import { dirname, join, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';
import { WebSocket as WsClient } from 'ws';
import { RpcError, TransportClosedError } from '../../src/background/transport/types.js';
import { WebSocketTransport, type WebSocketCtor, type WebSocketTransportDeps } from '../../src/background/transport/websocket.js';
import { CaptureHook } from '../../src/background/capture/index.js';
import type { OnHeadersReceivedDetails } from '../../src/background/capture/index.js';
import type { CaptureRules, DownloadSpec, TaskProgressEvent, TaskStateEvent } from '../../src/shared/protocol/index.js';
const VELOXD_BIN = process.env.VELOXD_BIN;
const REPO_ROOT = resolve(dirname(fileURLToPath(import.meta.url)), '../../..');
const TESTSERVER_PY = join(REPO_ROOT, 'tools/testserver/testserver.py');
// A fixed moz-extension origin, used both as session.pair's extensionId and as the WS
// upgrade's Origin header — real Firefox sets the latter itself; ws's client needs it
// spelled out (docs/05 §4: the daemon refuses the upgrade without a moz-extension:// Origin).
const EXTENSION_ID = '11111111-2222-3333-4444-555555555555';
const ORIGIN = `moz-extension://${EXTENSION_ID}`;
class OriginWebSocket extends WsClient {
constructor(url: string) {
super(url, { origin: ORIGIN });
}
}
const CTOR = OriginWebSocket as unknown as WebSocketCtor;
function sleep(ms: number): Promise<void> {
return new Promise((r) => setTimeout(r, ms));
}
async function waitFor(cond: () => Promise<boolean> | boolean, timeoutMs: number, what: string): Promise<void> {
const deadline = Date.now() + timeoutMs;
for (;;) {
if (await cond()) return;
if (Date.now() > deadline) throw new Error(`timed out waiting for ${what}`);
await sleep(50);
}
}
interface VeloxdInstance {
proc: ChildProcessWithoutNullStreams;
scratch: string;
wsPort: number;
/** True once the process has actually exited, by signal or otherwise. Node only sets
* `proc.exitCode` for a normal exit — a signal-killed process reports its death via
* `signalCode` and an `exit` event instead, never a non-null `exitCode`. */
hasExited(): boolean;
kill(signal?: NodeJS.Signals): void;
}
async function startVeloxd(bin: string): Promise<VeloxdInstance> {
const scratch = mkdtempSync(join(tmpdir(), 'velox-live-'));
const runtime = join(scratch, 'rt');
const data = join(scratch, 'data');
const config = join(scratch, 'cfg');
const home = join(scratch, 'home');
mkdirSync(runtime, { mode: 0o700 });
mkdirSync(data, { recursive: true });
mkdirSync(config, { recursive: true });
mkdirSync(join(home, 'Downloads'), { recursive: true });
const proc = spawn(bin, [], {
env: {
...process.env,
VELOX_PAIR_AUTO: '1',
XDG_RUNTIME_DIR: runtime,
XDG_DATA_HOME: data,
XDG_CONFIG_HOME: config,
HOME: home,
},
});
let exited = false;
proc.on('exit', () => {
exited = true;
});
let stderr = '';
proc.stderr.on('data', (d) => {
stderr += String(d);
});
const portFile = join(runtime, 'velox', 'ws.port');
try {
await waitFor(async () => {
if (exited) throw new Error(`veloxd exited early (code ${proc.exitCode}, signal ${proc.signalCode}): ${stderr}`);
try {
await readFile(portFile);
return true;
} catch {
return false;
}
}, 10_000, 'veloxd to write ws.port');
} catch (e) {
proc.kill('SIGKILL');
rmSync(scratch, { recursive: true, force: true });
throw e;
}
const wsPort = Number((await readFile(portFile, 'utf8')).trim());
return {
proc,
scratch,
wsPort,
hasExited: () => exited,
kill(signal: NodeJS.Signals = 'SIGTERM') {
proc.kill(signal);
},
};
}
interface TestServerInstance {
proc: ChildProcessWithoutNullStreams;
baseUrl: string;
}
async function startTestServer(): Promise<TestServerInstance> {
const proc = spawn('python3', [TESTSERVER_PY, '--port', '0'], {});
let stdout = '';
let port: number | null = null;
proc.stdout.on('data', (d) => {
stdout += String(d);
const m = /^(\d+)\s*$/m.exec(stdout);
if (m) port = Number(m[1]);
});
await waitFor(() => port !== null, 5_000, 'testserver to print its port');
const baseUrl = `http://127.0.0.1:${port}`;
await waitFor(async () => {
try {
const res = await fetch(`${baseUrl}/__health`);
return res.ok;
} catch {
return false;
}
}, 5_000, 'testserver /__health');
return { proc, baseUrl };
}
function memDeps(init: { token?: string | null } = {}): { deps: WebSocketTransportDeps; store: { token: string | null } } {
const store = { token: init.token ?? null };
return {
store,
deps: {
getToken: async () => store.token,
setToken: async (t) => {
store.token = t;
},
getCachedPort: async () => null,
setCachedPort: async () => undefined,
extensionId: EXTENSION_ID,
},
};
}
function makeTransport(port: number, deps: WebSocketTransportDeps, extra: Partial<WebSocketTransportDeps> = {}): WebSocketTransport {
return new WebSocketTransport({
...deps,
...extra,
webSocketCtor: CTOR,
portRange: { start: port, end: port },
openTimeoutMs: 2000,
});
}
const maybeDescribe = VELOXD_BIN ? describe : describe.skip;
if (!VELOXD_BIN) {
console.warn('tests/live/real-veloxd.test.ts: VELOXD_BIN not set — skipping (see file header).');
}
maybeDescribe('WebSocketTransport against a real veloxd', () => {
let daemon: VeloxdInstance;
let testserver: TestServerInstance;
// The mid-test fail-open case kills `daemon` and a later test starts a replacement —
// every scratch dir that ever existed gets cleaned up here, not just the last one.
const allScratchDirs: string[] = [];
async function freshVeloxd(): Promise<VeloxdInstance> {
const d = await startVeloxd(VELOXD_BIN!);
allScratchDirs.push(d.scratch);
return d;
}
beforeAll(async () => {
daemon = await freshVeloxd();
testserver = await startTestServer();
}, 20_000);
afterAll(() => {
daemon?.kill('SIGKILL');
testserver?.proc.kill('SIGKILL');
for (const dir of allScratchDirs) rmSync(dir, { recursive: true, force: true });
});
it('session.hello without a token surfaces NotPaired / needsPairing', async () => {
const { deps } = memDeps();
const t = makeTransport(daemon.wsPort, deps, { autoPair: false });
await expect(t.connect()).rejects.toBeInstanceOf(RpcError);
expect(t.status.needsPairing).toBe(true);
t.disconnect();
});
let pairedToken: string;
it('pairs (VELOX_PAIR_AUTO=1 stands in for the human Allow click) and hellos with the issued token', async () => {
const { deps, store } = memDeps();
const t = makeTransport(daemon.wsPort, deps); // autoPair: true (default)
await t.connect();
expect(t.state).toBe('connected');
expect(t.status.daemonVersion).toBeTruthy();
expect(store.token).toBeTruthy();
pairedToken = store.token!;
t.disconnect();
});
it('the pairing token survives a reconnect: a fresh transport reuses it with no fresh pairing', async () => {
const { deps } = memDeps({ token: pairedToken });
// autoPair: false — if this succeeds at all, it can only be because the stored
// token from the previous test was accepted outright, not because this transport
// silently re-paired.
const t = makeTransport(daemon.wsPort, deps, { autoPair: false });
await t.connect();
expect(t.state).toBe('connected');
t.disconnect();
});
it('a wrong token is rejected, and repeating it rate-limits the next pairing attempt', async () => {
// Five failed session.hello attempts from this origin (ws_server.cpp records a
// rate-limiter failure on every not-paired hello, not only on a failed session.pair)
// exhausts the window; the sixth thing this origin tries — a pairing attempt — gets
// RateLimited rather than a fresh token.
for (let i = 0; i < 5; i += 1) {
const { deps } = memDeps({ token: 'not-the-real-token' });
const t = makeTransport(daemon.wsPort, deps, { autoPair: false });
await expect(t.connect()).rejects.toBeInstanceOf(RpcError);
t.disconnect();
}
const { deps } = memDeps(); // no token -> autoPair kicks in -> session.pair
const t = makeTransport(daemon.wsPort, deps);
await expect(t.connect()).rejects.toBeInstanceOf(RpcError);
expect(t.status.needsPairing).toBe(true);
expect(t.status.retryAfterSec).toBeGreaterThan(0);
t.disconnect();
});
it('download.add creates a real task the engine picks up', async () => {
const { deps } = memDeps({ token: pairedToken });
const t = makeTransport(daemon.wsPort, deps, { autoPair: false });
await t.connect();
try {
const spec: DownloadSpec = { url: `${testserver.baseUrl}/plain/file/64K`, filename: 'plain-download.bin' };
const added = await t.call('download.add', spec);
expect(added.taskId).toBeTruthy();
await waitFor(async () => {
const detail = await t.call('download.get', { taskId: added.taskId });
const state = detail.summary.state;
return state === 'complete' || state === 'downloading' || state === 'verifying';
}, 10_000, 'the task to leave the queued state');
} finally {
t.disconnect();
}
}, 15_000);
it('capture.offer end to end: the real capture path takes a monitored download, ignores its own duplicate, and fails open when the daemon dies mid-offer', async () => {
const { deps } = memDeps({ token: pairedToken });
const t = makeTransport(daemon.wsPort, deps, { autoPair: false });
await t.connect();
const rules: CaptureRules = await t.call('capture.getRules', {});
expect(rules.monitoredExtensions).toContain('zip'); // seeded default (0001_initial.sql)
const hook = new CaptureHook({
offer: (params, opts) => t.call('capture.offer', params, opts),
stash: { take: () => undefined, peek: () => undefined },
getCookies: async () => [],
getRules: () => rules,
origin: ORIGIN,
});
// A throttled URL so the task the first offer creates is still active (not yet
// complete) when the dedupe offer for the same URL follows immediately after.
const url = `${testserver.baseUrl}/throttled/file/512K`;
const details: OnHeadersReceivedDetails = {
requestId: 'live-1',
url,
method: 'GET',
type: 'other',
statusCode: 200,
tabId: 1,
responseHeaders: [{ name: 'content-disposition', value: 'attachment; filename="live-capture.zip"' }],
};
const first = await hook.handle(details);
expect(first).toEqual({ cancel: true }); // the daemon took it — Firefox never starts its own download
const list = await t.call('download.list', { filter: { query: 'live-capture' } });
expect(list.items.length).toBeGreaterThan(0);
const task = list.items[0]!;
expect(task.categoryId).toBe('programs'); // "zip" routes to the built-in Programs category
expect(task.saveDir).toContain('Downloads/Programs');
// Same URL again, task still active: the daemon's own dedupe (has_active_duplicate)
// says Ignore, so the hook proceeds instead of cancelling a second time.
const dup = await hook.handle({ ...details, requestId: 'live-2' });
expect(dup).toEqual({});
// Now kill the daemon mid-offer and prove fail-open holds against the REAL binary,
// not just FakeDaemon: the hook must still resolve to {} (Firefox downloads
// normally) well inside its own 750 ms budget.
daemon.kill('SIGKILL');
await waitFor(() => daemon.hasExited(), 5_000, 'veloxd to actually die');
const started = Date.now();
const afterDeath = await hook.handle({ ...details, requestId: 'live-3', url: `${url}?after-death=1` });
const elapsedMs = Date.now() - started;
expect(afterDeath).toEqual({}); // fail open — never {cancel: true} with a dead daemon
expect(elapsedMs).toBeLessThan(900); // budget is 750ms; the hook's own timer bounds this
t.disconnect();
}, 20_000);
it('event.task.progress reaches a subscribed client (the popup\'s own path)', async () => {
if (daemon.hasExited()) {
// The previous test kills the daemon on purpose to prove fail-open; start a fresh
// one so this test still exercises the real event path end to end.
daemon = await freshVeloxd();
}
const { deps } = memDeps();
const t = makeTransport(daemon.wsPort, deps); // fresh daemon instance -> fresh pairing
await t.connect();
try {
await t.call('session.subscribe', {
events: ['event.task.added', 'event.task.state', 'event.task.progress'],
});
const progressEvents: TaskProgressEvent[] = [];
const stateEvents: TaskStateEvent[] = [];
t.on('event.task.progress', (p) => progressEvents.push(p as TaskProgressEvent));
t.on('event.task.state', (p) => stateEvents.push(p as TaskStateEvent));
const spec: DownloadSpec = { url: `${testserver.baseUrl}/throttled/file/1M`, filename: 'progress-check.bin' };
const added = await t.call('download.add', spec);
// /throttled defaults to 1 MiB/s, so a 1 MiB file takes ~1s — long enough that at
// least one 4 Hz progress tick (event.task.progress's documented cap) lands before
// it completes, exactly the path popup/store.ts consumes in the real extension.
await waitFor(
() => progressEvents.some((e) => e.tasks.some((row) => row.taskId === added.taskId)),
8_000,
'a live event.task.progress tick for our task',
);
expect(stateEvents.some((e) => e.taskId === added.taskId)).toBe(true);
} finally {
t.disconnect();
}
}, 15_000);
it('fail-open also holds through the transport itself: a call against a dead socket rejects, never hangs past its deadline', async () => {
const { deps } = memDeps();
const t = makeTransport(daemon.wsPort, deps);
await t.connect();
t.disconnect(); // closes the socket without telling the daemon anything is wrong
await expect(t.call('capture.offer', { url: 'https://example.com/x.zip', method: 'GET', tabUrl: '' }, { timeoutMs: 200 })).rejects.toBeInstanceOf(
TransportClosedError,
);
});
});
+40 -6
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@@ -56,6 +56,13 @@ void RpcClient::stop() {
QMetaObject::invokeMethod(conn_, "stop", Qt::QueuedConnection);
thread_.quit();
thread_.wait();
// thread_.wait() does not return until thread_'s own finish() has already flushed the
// DeferredDelete this class's own connect(&thread_, &QThread::finished, conn_,
// &QObject::deleteLater) posted — conn_ is gone by now. Null it out so a later call
// (stop() is a public slot; a caller stopping and then destroying the client is normal
// use, and the destructor's own `delete conn_` for the never-started case must not
// run a second time against memory this path already freed).
conn_ = nullptr;
}
void RpcClient::call(const QString &methodName, const QJsonObject &params,
@@ -76,17 +83,44 @@ void RpcClient::onConnectionState(int state) {
}
void RpcClient::requestInitialList() {
call(QString::fromLatin1(method::kDownloadList), QJsonObject{{"limit", 1000}},
[this](const RpcReply &reply) {
fetchListPage(0, {});
}
// download.list.schema.json: "Filtering, sorting and paging all happen in the daemon so
// the GUI never materializes 100k rows to show 40" — limit maxes out at 5000, so one call
// cannot ever return everything for a table the DoD's own gate says can hold 10 000 rows.
// A single fixed-limit call here silently truncated the table below that (caught by
// gui/tests/dod's scroll-60fps gate refusing to run against a 1000-row table when mockd
// seeded 10000). Page until `total` is satisfied, then reset the model exactly once.
void RpcClient::fetchListPage(int offset, QJsonArray accumulated) {
constexpr int kPageSize = 5000; // download.list's own maximum
constexpr int kMaxPages = 100; // 500 000 rows — a safety cap, not an expected ceiling
call(QString::fromLatin1(method::kDownloadList),
QJsonObject{{"offset", offset}, {"limit", kPageSize}},
[this, offset, accumulated](const RpcReply &reply) mutable {
if (!reply.ok()) {
qCWarning(lcRpc, "download.list failed: %d %s", reply.error.code,
qUtf8Printable(reply.error.message));
if (!accumulated.isEmpty()) {
emit taskListReset(accumulated); // show what we got rather than nothing
}
return;
}
const QJsonArray items = reply.result.toObject().value("items").toArray();
qCInfo(lcRpc, "initial download.list: %lld row(s)",
static_cast<long long>(items.size()));
emit taskListReset(items);
const QJsonObject result = reply.result.toObject();
const QJsonArray page = result.value("items").toArray();
const qint64 total = static_cast<qint64>(result.value("total").toDouble());
for (const QJsonValue &item : page) {
accumulated.append(item);
}
const bool morePages =
!page.isEmpty() && accumulated.size() < total && (offset / kPageSize) < kMaxPages;
if (morePages) {
fetchListPage(offset + static_cast<int>(page.size()), accumulated);
return;
}
qCInfo(lcRpc, "initial download.list: %lld of %lld row(s)",
static_cast<long long>(accumulated.size()), static_cast<long long>(total));
emit taskListReset(accumulated);
});
}
+1
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@@ -67,6 +67,7 @@ class RpcClient : public QObject {
private:
void requestInitialList();
void fetchListPage(int offset, QJsonArray accumulated);
QThread thread_;
RpcConnection *conn_ = nullptr; // owned by thread_ affinity, deleted on thread finish
+6 -4
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@@ -154,10 +154,12 @@ void RpcConnection::dispatchFrame(const QJsonObject &frame) {
socket_->abort(); // version mismatch or refused — bounce and retry
return;
}
sendRaw(kSubscribeId, QString::fromLatin1(method::kSessionSubscribe),
QJsonObject{{"events", QJsonArray{event::kTaskAdded, event::kTaskRemoved,
event::kTaskState, event::kTaskProgress,
event::kSpeedGlobal, event::kNotify}}});
sendRaw(
kSubscribeId, QString::fromLatin1(method::kSessionSubscribe),
QJsonObject{
{"events", QJsonArray{event::kTaskAdded, event::kTaskRemoved, event::kTaskState,
event::kTaskProgress, event::kSpeedGlobal, event::kNotify,
event::kSettingsChanged, event::kGrabberProgress}}});
return;
}
if (id == kSubscribeId) {